Added Visual Studio 2015 .vs folder

vvolkgang · vvolkgang · commit 526bf54931ac · 2016-03-27T19:45:26.000+01:00
Visual Studio 2015 moved all the user specific configuration to a .vs folder, which shouldn't be tracked.
diff --git a/UnrealEngine.gitignore b/UnrealEngine.gitignore
@@ -1,3 +1,6 @@
+# Visual Studio 2015 user specific files
+.vs/
+
 # Compiled Object files
 *.slo
 *.lo
@@ -57,3 +60,5 @@ Intermediate/*
 
 # Cache files for the editor to use
 DerivedDataCache/*
+
+
